to say something without thinking carefully, so that you embarrass or upset someone
بی هوا و بدون فکر حرف زدن که باعث ناراحتی و رنجش و شرمندگی دیگران بشه
informal
: to say something that causes someone to be embarrassed, upset, or hurt especially when the speaker did not expect that reaction
I really put my foot in it when I asked her about her job. I didn't know she had just been fired.